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function abc(str)
{
var a = alert;
}
//开始
var numberOfTimes = 100000;
var startDate = (new Date()).getTime();
//代码部分
for(var iii = 0; iii < numberOfTimes; iii++)
{
abc();
}
//结束
var endDate = (new Date()).getTime();
//计算
window.alert(endDate - startDate); //25左右
function abc(str)
{
var a = window.alert;
}
//开始
var numberOfTimes = 100000;
var startDate = (new Date()).getTime();
//代码部分
for(var iii = 0; iii < numberOfTimes; iii++)
{
abc();
}
//结束
var endDate = (new Date()).getTime();
//计算
window.alert(endDate - startDate); //50左右